:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background-color: var(--bg);
  background-image: radial-gradient(at top left, #eff6ff 0%, transparent 40%),
                    radial-gradient(at top right, #f1f5f9 0%, transparent 40%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-container {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page-header {
  padding: 4rem 1.5rem 2rem;
  text-align: center;
}

.header-content h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: #1e293b;
}

.header-content p {
  margin: 1rem 0 0;
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.page-content {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

/* Card Styles */
.card {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.card.visible {
  opacity: 1;
  transform: translateY(0);
}

.card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-link:hover,
.card-link:focus-visible {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
}

.card-link:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.4);
  outline-offset: 4px;
}

.card-image-wrapper {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #f1f5f9;
}

.card-image {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card-link:hover .card-image {
  transform: scale(1.05);
}

.card-body {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  flex: 1;
}

.card-title {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: #1e293b;
}

.card-description {
  margin: 0 0 1.5rem;
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}

.card-cta {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: gap 0.2s ease;
}

.card-link:hover .card-cta {
  gap: 0.5rem;
}

/* Footer */
.page-footer {
  padding: 3rem 1.5rem;
  background: white;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-content p {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.footer-links {
  margin-top: 1rem;
}

.footer-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
}

.footer-links a:hover {
  text-decoration: underline;
}

/* States */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--muted);
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

.hidden {
  display: none;
}

@media (max-width: 640px) {
  .page-header {
    padding: 3rem 1rem 1.5rem;
  }
  
  .links-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}